Several of these IDs change when you get a new Personalausweis, Reisepaß, or Health Insurance, respectively. They don't identify you, but the document or contra

Several of these IDs change when you get a new Personalausweis, Reisepaß, or Health Insurance, respectively. They don't identify you, but the document or contract. Some of the tax identifiers might be specific to you and a tax authority, ie change when you move to a different Land.